liner
n.— «Participants in the container shipping industry include “liner” companies, who operate container shipping services.…The range of containership owners is diverse, including liner companies, which are often significant corporate entities, and charter owners, who are often part of wider groups involved in other shipping activities.» —“Analyst Panel Discussion on the Container Sector” CNNMoney.com Sept. 18, 2007. (source: Double-Tongued Dictionary)